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Functional evaluation of NK1 antagonism on cue reactivity in opiate dependence; an fMRI study

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Title: Functional evaluation of NK1 antagonism on cue reactivity in opiate dependence; an fMRI study
Authors: Fonville, L
Paterson, L
Herlinger, K
Hayes, A
Hill, R
Nutt, D
Lingford-Hughes, A
Item Type: Journal Article
Abstract: Background Opiate addiction is a major health challenge with substantial societal cost. Though harm minimisation strategies have been effective, there is a growing need for new treatments for detoxification and relapse prevention. Preclinical research has found neurokinin 1 (NK1) receptors have prominent effects on opiate reward and reinforcement, and human studies have found NK1 antagonism led to reductions in craving and withdrawal. However, its effect on brain mechanisms in opiate addiction has not yet been examined. Methods This study aims to assess the impact of NK1 antagonist aprepitant on heroin cue-elicited changes in blood-oxygenation level dependent (BOLD) signal in opiate dependent individuals undergoing detoxification. Participants will attend two scanning sessions and receive a single dose of aprepitant (320 mg) and a placebo in a randomised, cross-over design. During functional magnetic resonance imaging participants will undergo two runs of a cue reactivity task, which consists of passive viewing of drug cues or neutral cues in a block design fashion. We hypothesise that NK1 antagonism will attenuate the BOLD response to drug cues in the caudate nucleus and amygdala. Regions of interest were selected based on NK1 receptor density and their role in cue reactivity and craving.
Issue Date: 1-Apr-2021
Date of Acceptance: 28-Dec-2020
URI: http://hdl.handle.net/10044/1/86845
DOI: 10.1016/j.drugalcdep.2021.108564
ISSN: 0376-8716
Publisher: Elsevier BV
Start Page: 1
End Page: 7
Journal / Book Title: Drug and Alcohol Dependence
Volume: 221
Copyright Statement: © 2021 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Sponsor/Funder: Medical Research Council (MRC)
Funder's Grant Number: MR/R024197/1
Keywords: Amygdala
Cue reactivity
Opiate dependence
Substance Abuse
11 Medical and Health Sciences
17 Psychology and Cognitive Sciences
Publication Status: Published
Article Number: 108564
Online Publication Date: 2021-01-29
Appears in Collections:Department of Brain Sciences

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